noun
: mass as determined by impact experiments in accordance with the law that the masses of bodies are inversely proportional to the velocities which a given force will impart to them in a given time
noun
: mass as determined by impact experiments in accordance with the law that the masses of bodies are inversely proportional to the velocities which a given force will impart to them in a given time
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012